Chapter 205 becomes the last chapter of manga Kimetsu no Yaiba and also being the last story of Kamado's Family. in the last chapter of kimetsu no yaiba it is shown that all the characters in the manga has die and separate yushiro.
which all the characters in the manga kimetsu no yaiba will be killed. even though all the characters in the manga kimetsu no yaiba will be killed, but kimetsu no yaiba still get a happy ending. cause all the characters in Kimetsu no Yaba will killied by the time. where at the end of the manga chapter 205 is told some generation after generation of tanjiro. and also shown the world has entered a modern era where there is no more things like a devil.
in the manga kimetsu no yaiba chapter 205. almost all the characters that existed in the era of tanjiro have been killed and only leave Yushiro who is a devil who still alive. where Yushiro still remembers what tanjiro says to him. tanjiro say only yushiro who can live to remember tamayo and because of that Yushiro became a famous artist who in the modern era.
then it told all the characters in the Tanjiro era reincarnated and returned to life in the modern era, where all the characters in the Tanjiro era re-emerged in Chapter 205 and became a new character. although indeed it is not tanjiro or characters in the era of tanjiro but because this new character looks like a character that has been killed. make fans think it's a character who has been killed and make this anime seem to get a happy ending.
maybe the author really wants to make a happy ending so that it makes timeskip for several generations and re-emerges characters who have been killed by reincarnation. where all the characters who were killed in the fight against evil will reappear in this last character, even other characters who have died because of other things will be re-appeared in this last chapter. but for the character of the devil did not appear in this last chapter and did not get reincarnation.
and the last chapter of kimetsu no yaiba is a very interesting chapter. which all the characters in kimetsu no yaiba besides the devils are re-presented and presented as reincarnations of the character. thus making kimetsu no yaiba end up with a happy ending even though all the characters in this anime has been killed. and I want to thank the author kimetsu no yaiba Koyoharu Gotōge who has made a very exciting manga series every week.